Dell EMC VxFlex Ready Node R840 Manual page 31

Virtualization Technology
Enables or disables the virtualization technology for the processor. This option is
set to Enabled by default.
Adjacent Cache Line Prefetch
Optimizes the system for applications that need high utilization of sequential
memory access. This option is set to Enabled by default. You can disable this
option for applications that need high utilization of random memory access.
Hardware Prefetcher
Enables or disables the hardware prefetcher. This option is set to Enabled by
default.
DCU Streamer Prefetcher
Enables or disables the Data Cache Unit (DCU) streamer prefetcher. This option
is set to Enabled by default.
DCU IP Prefetcher
Enables or disables the Data Cache Unit (DCU) IP prefetcher. This option is set to
Enabled by default.
Sub NUMA Cluster
Sub NUMA Clustering (SNC) is a feature for breaking up the LLC into disjoint
clusters based on address range, with each cluster bound to a subset of the
memory controllers in the system. It improves average latency to the LLC.
Enables or disables the Sub NUMA Cluster. This option is set to Disabled by
default.
UPI Prefetch
Enables you to get the memory read started early on DDR bus. The Ultra Path
Interconnect (UPI) Rx path will spawn the speculative memory read to Integrated
Memory Controller (iMC) directly. This option is set to Enabled by default.
Logical Processor Idling
Enables you to improve the energy efficiency of a system. It uses the operating
system core parking algorithm and parks some of the logical processors in the
system which in turn allows the corresponding processor cores to transition into a
lower power idle state. This option can only be enabled if the operating system
supports it. It is set to Disabled by default.
Note
This feature is not supported if CPU Power Management is set to Maximum
Performance.
x2APIC Mode
Enables or disables the x2APIC mode. This option is set to Enabled by default.
Dell Controlled Turbo
Controls the turbo engagement. Enable this option only when System Profile is
set to Performance.
Managing basic system settings using the system firmware
System BIOS
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